西北林学院学报2026，Vol.41Issue(3)：59-68,10.DOI:10.3969/j.issn.1001-7461.2026.03.06
石羊河下游沙蒿群落空间分布与土壤因子关系研究
Relationship Between the Distribution of Artemisia desertorum Community and Soil Factors in the Lower Reaches of Shiyang River
摘要
Abstract
In order to explore the mutual feedback relationship between the spatial distribution of Artemisia desertorum community and environmental factors,the community ecology survey of 50 A.desertorum plots was carried out in the lower reaches of Shiyang River during the growing season.Twelve soil physical and chemical factors such as water,grain size,total nitrogen,organic matter,available phosphorus and electrical conductivity were analyzed and determined in the laboratory.The key soil factors of spatial distribution of A.desertorum community were analyzed by quantitative ecological classification and ordination,and the succession process and soil driving mechanism of A.desertorum community were clarified.The results showed that there were 42 plant species belonging to 35 genera and 13 families in the A.desertorum com-munity in the lower reaches of Shiyang River.The two-way indicator species classification divided the A.desertorum community in the lower reaches of Shiyang River into eight associations.The spatial distri-bution of the eight associations reflects the environmental gradient changes dominated by soil water and fertilizer.The results of canonical correspondence analysis showed that soil factors explained 56.06%of the variance of A.desertorum community,and the order was total nitrogen(12.1%)>soil moisture(9.8%)>soil electrical conductivity(3.9%)=organic matter(3.9%)>soil clay(3.0%)>available phos-phorus(2.9%)>pH(2.6%)>soil sand(1.8%)>soil total salt(1.3%).Among them,total nitrogen and soil moisture are the most important soil regulating factors for the distribution of A.desertorum communi-ty in the lower reaches of Shiyang River.The restoration of degraded A.desertorum communities suggested that comprehensive measures such as improving soil structure,regulating soil nutrients,and improving soil moisture status should be taken in the lower reaches of Shiyang River.关键词
沙蒿/双向指示种分类/典范对应分析/土壤因子/石羊河下游Key words
Artemisia desertorum/two-way indicator species analysis/canonical correspondence analysis/soil factors/lower reaches of Shiyang River分类
农业科技引用本文复制引用
于柱英,张珍妮,赵鹏,刘子玺,季立荣..石羊河下游沙蒿群落空间分布与土壤因子关系研究[J].西北林学院学报,2026,41(3):59-68,10.基金项目
国家自然科学青年基金(42207109) （42207109）
第二批陇原青年英才项目([2023]11号) （[2023]11号）
2024年中央财政林草科技推广示范项目(甘财资环[2024]52号). （甘财资环[2024]52号）
